So growing up I went to WDW a few times but have always been to chicken to do Space Mountain. I still am! We will be going in January with my 6 year old, husband and 10 month old. The 6 year old will be tall enough and wants to do it but my question is can she sit next to my husband (who isn't necessarily small) or would she have to be in the seat by herself. Just trying to prepare her. Thanks much. Also, what is a good activity to do right in that area with the 10 month old while they are on space mountain.